Time Clock - Table Design [closed]

Answer 1

im using jquery for this matter easy in/out

i made a simple program just now, to make it simple all the variables i save is from this simple code

function getClock(){
  var d = new Date();
  var nhour = d.getHours(),nmin=d.getMinutes(),nsec=d.getSeconds(),ap;

  if (nhour == 0) {
    ap = " AM";
    nhour = 12;
  } else if (nhour < 12) {
    ap = " AM";
  } else if (nhour == 12) {
    ap = " PM";
  } else if (nhour > 12) {
    ap = " PM";
    nhour -= 12;
  }

  var nminTot = nmin <= 9 ? nmin = "0" + nmin : nmin;
  var nsecTot = nsec <= 9 ? nsec = "0" + nsec : nsec;

  $("#clockbox").html(nhour + ":" + nminTot + ":" + nsecTot + ap);
}
setInterval(getClock, 1000)

very short time clock design easy to get variables. http://jsfiddle.net/2pqn6a1z/6/

Answer 2

Bottom line - this should be a make/buy choice, with only one real option. It's ugly, messy, ultimately user-facing, and been solved over and over and over. Please, please don't do it once again from first principles. You're going to need to buy hardware anyway, and they all come with software.

At least I hope you're not going to reinvent the hardware ...

Answer 3

Table name: Sessions
Columns   : ID, UserID, Timestamp_IN, Timestamp_OUT

Based on the info you've given, I like that simple design. There really isn't enough info though. Will the system automatically detect if it's a punch IN or OUT? Will the user specify? Etc..

It seems that you want to store a session of some sort and the time that session begins and ends. Can you punch out twice in a row without punching in? These questions are important.

Answer 4

Been there. You want a simple events table. Don't combine punch-in and punch-out into the same record. Inevitably people will try to punch out with no punch-in record, and you can't lock up the system while you figure out why. Just record what you can and flag an administrative error.

Edit: This may be what Peter is saying. If so, upvote his - he was here first, and I have plenty of points already.

Edit: This is one of the oldest, most thoroughly debugged paradigms in existence. Go find an existing (perhaps mechanical) timeclock system and duplicate it.